Topic Four (1.4): Measuring Data Storage

This part of the module focuses on the units used to measure amounts of data, in particular “new” units created to avoid confusion between denary and binary based definitions of units e.g. there are 1,000 Megabytes in a Gigabyte (denary), but 1,024 Mebibytes in a Gibibyte (binary/hexadecimal).

You will learn how to use these measurements to calculate the size of image and sound files. As part of your assignment, you will be asked to calculate the approximate size of a file using this method.

Read

Please read through and make notes on pages 25 to the top of page 27 in your coursebook and complete Skills Focus 1.3.

Links

Please work through the following resource.

A couple of examples of calculating image file sizes:

READ – How do I Calculate the File Size for a Digital Image? (NSI) Links to an external site.